This Java tip illustrates a method of creating a ZIP file. ZIP is a universal format used by many applications to compress their files. By using this option developer may give their user an option of compressing their files in ZIP format.

  // These are the files to include in the ZIP file
    String[] source = new String[]{"source1", "source2"};
    
    // Create a buffer for reading the files
    byte[] buf = new byte[1024];
    
    try {
        // Create the ZIP file
        String target = "target.zip";
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(target));
    
        // Compress the files
        for (int i=0; i<source.length; i++) {
            FileInputStream in = new FileInputStream(source[i]);
    
            // Add ZIP entry to output stream.
            out.putNextEntry(new ZipEntry(source[i]));
    
            // Transfer bytes from the file to the ZIP file
            int len;
            while ((len = in.read(buf)) > 0) {
                out.write(buf, 0, len);
            }
    
            // Complete the entry
            out.closeEntry();
            in.close();
        }
    
        // Complete the ZIP file
        out.close();
    } catch (IOException e) {
    }